#1 B
#2 D
#3 A
See attached photo for step by step solutions :)
Answer:
x = 7
Step-by-step explanation:
We solve the equation the following way...

Answer:
24
Step-by-step explanation:
8 times 3= 24
12 times 2= 24
Answer:
Step-by-step explanation: It's B.) The student’s answer is not reasonable. Estimation: 170 + 90 = 260
3-5=-2. 2×4=8. 8×-2=-16 the answer is -16